Metal mold



May 11 1925.

J. L. DOSTAL. ET AL METAL 'MOLD Filed August 19. 1925 Joan /1L. 00$ 244.

Q V j 1,584,018

In combination with a sectional mold. said supporting :hmfder, a phlmlity of 26 adapted for the casting therein of an auto-- gates connecting said groove to the matrix 'znobile type piston head up, a. cylindrical of the piston skirt, a sprue adapted to faked, dry sand core Within said meld, a shoulder ilnn #0 said groove,

on said mold whereby the core is lbcated In testimony whereof We affix our signs.-

concentriczl llgy within said mold and preaures. vented from rising therein under the ferrostatic head of the metal cast therein, an an-' JOSEPH L. DOSTAL.

nular gi-oove located immediately above v WALTER S. ANDERSON. 

